| East Falmouth Elementary Parent Teacher OrganizationEast Falmouth | Form 990-EZ | $41,147FY2025 |
| Loella F Dewing School Parent Advisory CouncilTewksbury | Form 990-N | No figure |
| Dudley PTODudley | Form 990-EZ | $41,024FY2025 |
| Fatherly Justice AssociationBoston | Form 990-N | No figure |
| Shrewsbury Schools Performing Arts AssociationShrewsbury | Form 990-N | No figure |
| Belmonte Upper Elementary School PTOSaugus | Form 990-EZ | $40,780FY2026 |
| PTO Englesby Elementary SchoolDracut | Form 990-N | No figure |
| Massachusetts Indian AssociationCarlisle | Form 990-EZ | $40,692FY2024 |
| Peabody Institute Library Foundation IncPeabody | Form 990-N | No figure |
| Middlesex County Robotics Club IncBoxborough | Form 990-N | No figure |
| John Ryan Elementary School PacTewksbury | Form 990-EZ | $40,526FY2026 |
| Seekonk Library TrustSeekonk | Form 990 | $40,505FY2025 |
| NHS Friends of Music IncNeedham | Form 990-EZ | $40,393FY2025 |
| Great Oak PacDanvers | Form 990-N | No figure |
| Reading Education Foundation IncReading | Form 990-N | No figure |
| Writers Without Margins IncNorwell | Form 990-N | No figure |
| Countryside Elementary School PTO IncNewton Highlands | Form 990-EZ | $40,188FY2025 |
| Robin Hood PTO IncStoneham | Form 990-EZ | $40,183FY2024 |
| Youth Lacrosse of Amesbury IncAmesbury | Form 990-N | No figure |
| Horace Mann Middle School Parent Communication CouncilFranklin | Form 990-N | No figure |
| Tewksbury Memorial High School Theatre Company IncTewksbury | Form 990-N | No figure |
| Institute for Meditation & PsychotherapyBelmont | Form 990-N | No figure |
| Friends of Old Rochester Drama IncMattapoisett | Form 990-N | No figure |
| Nathaniel Morton Elementary School PTAPlymouth | Form 990-EZ | $39,448FY2025 |
| Canton Association of Parents and Teachers LT Peter M Hansen SchoolCanton | Form 990-EZ | $39,302FY2025 |
| Roosevelt Avenue Parent Teacher GroupNorth Attleboro | Form 990-EZ | $39,201FY2025 |
| Lincoln Street School PTONorthborough | Form 990-N | No figure |
| Mashpee Parent Teacher OrganizationMashpee | Form 990-EZ | $39,035FY2025 |
| Friends of Clapp Memorial Library IncBelchertown | Form 990-N | No figure |
| LG Nourse Parent Teacher Connection IncNorton | Form 990-EZ | $38,817FY2026 |
| Willett PTONorwood | Form 990-N | No figure |
| Shakespeare Society Alumnae AssociationWellesley Hills | Form 990-N | No figure |
| Practical Education Network Africa-USA IncSomerville | Form 990-N | No figure |
| Beal PTOShrewsbury | Form 990-EZ | $38,526FY2025 |
| Early Childhood Parent Organization IncRaynham | Form 990-N | No figure |
| Hanover Parent Teacher Alliance IncHanover | Form 990-N | No figure |
| Bowen Elementary School Parent Teacher OrganizationNewton | Form 990-EZ | $37,759FY2025 |
| Mattapoisett Library Trust IncMattapoisett | Form 990-N | No figure |
| Captain Samuel Brown PTOPeabody | Form 990-N | No figure |
| North Attleboro High School Hockey Boosters Organization IncNorth Attleboro | Form 990-N | No figure |
| John Ward School Parent Teacher OrganizationNewton Centre | Form 990-N | No figure |
| Scituate High School Football Andcheerleading BoostersHanover | Form 990-N | No figure |
| Friends of B-R Athletics IncBridgewater | Form 990-EZ | $37,281FY2026 |
| Jackson Yelle Foundation IncWinchester | Form 990-N | No figure |
| North Andover Middle School Parent Teacher Advisory CouncilNorth Andover | Form 990-EZ | $37,148FY2024 |
| Trustees of the Goodnow Memorial BuildingPrinceton | Form 990-N | No figure |
| Dan Fahey Fall ClassicBurlington | Form 990-N | No figure |
| Friends of Tobin School IncCambridge | Form 990-N | No figure |
| Martha Briggs Educational Club IncNew Bedford | Form 990-N | No figure |
| Fa Cleveland School Parent Teacher OrganizationNorwood | Form 990-N | No figure |